…is that it cannot exist until a first step is taken in its name.
If that step is not taken, it cannot exist. Yet if we were to take that step, it would be prior to its specific existence.
The very characteristic of trust is that we do not know if it is justified. It can be proven otherwise, and it is because it can be proven otherwise that it is valued when it is proven positive.
The irony of trust is that it cannot be verified unless it is first thought to exist.